////驱动程序名   
//String driverName = "com.mysql.jdbc.Driver";  
////数据库用户名   
//String userName = "root";  
////密码   
//String userPasswd = "";  
////数据库名   
//String dbName = "detecting_system";  
////表名   
//String tableName = "market_data";  
////联结字符串   
//String url = "jdbc:mysql://localhost:3306/" + dbName + "?user="  
//        + userName + "&password=" + userPasswd;  
//Class.forName("com.mysql.jdbc.Driver").newInstance();  
//Connection connection = DriverManager.getConnection(url);  
//Statement statement = connection.createStatement();  
//String sql = "SELECT * FROM " + tableName;  
//ResultSet rs = statement.executeQuery(sql);  
//    while (rs.next()) {  
//    	out.print(rs.getString(13));
//    }  

var ctx = document.getElementById("myChart");
var myChart = new Chart(ctx, {
    type: 'bar',
    data: {
        labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
        datasets: [{
            label: '# of Votes',
            data: [12, 19, 3, 5, 2, 3],
            backgroundColor: [
                'rgba(255, 99, 132, 0.2)',
                'rgba(54, 162, 235, 0.2)',
                'rgba(255, 206, 86, 0.2)',
                'rgba(75, 192, 192, 0.2)',
                'rgba(153, 102, 255, 0.2)',
                'rgba(255, 159, 64, 0.2)'
            ],
            borderColor: [
                'rgba(255,99,132,1)',
                'rgba(54, 162, 235, 1)',
                'rgba(255, 206, 86, 1)',
                'rgba(75, 192, 192, 1)',
                'rgba(153, 102, 255, 1)',
                'rgba(255, 159, 64, 1)'
            ],
            borderWidth: 1
        }]
    },
    options: {
        scales: {
            yAxes: [{
                ticks: {
                    beginAtZero:true
                }
            }]
        }
    }
});